Heart Failure, Congestive

• Children's Hospital Boston — Boston, Massachusetts, United States
• Columbia College of Physicians and Surgeons — New York, United States
• Duke University Medical Center — Durham, North Carolina, United States
• Cincinnati Children's Hospital Medical Center — Cincinnati, Ohio, United States

• Heartland Health — Saint Joseph, Missouri, United States
• Cardiovascular Associates of Delaware Valley — Elmer, New Jersey, United States
• Thomas Jefferson University — Philadelphia, Pennsylvania, United States
• Temple University — Philadelphia, Pennsylvania, United States

• Royal Prince Alfred Hospital — Camperdown, New South Wales, Australia

• Royal Prince Alfred Hospital — Camperdown, New South Wales, Australia

Not specified

Not specified

• Universtiy Hospital Maastricht — Maastricht, Limburg, Netherlands

• VA Medical Center, Philadelphia — Philadelphia, Pennsylvania, United States

• Royal Prince Alfred Hospital — Camperdown, New South Wales, Australia

Not specified